There are some more details being discovered from the Daemonkin Codex. Not that exclusions don't make the Daemonkin more unique in a good way, but if you play one of those armies its great to know what will and what will not be available to be used with the new Daemonkin Codex.
This should of been a part of the lead up to pre-orders.
This was sent to us by our friends over on the El Descanso Del Escriba who found this or was sent the pic from the Warhammer 40,000 Facebook page.
Here is the latest update. Still no word on Grey Knights or other armies.